Patients undergoing definitive resection for gastric cancer and meeting the eligibility criteria will be treated with HIPEC using a single dose of Mitomycin 15mg/m2 and Cisplatin 50mg/m2 at 41-42 C for 90 minutes. HIPEC will be performed after resection but before anastomosis. Both Cisplatin and Mitomycin are commercially available chemotherapeutic agents and will be obtained as marketed drugs.